<template>
	<div>
		<!-- 面包屑导航 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品列表</el-breadcrumb-item>
			<el-breadcrumb-item>添加商品</el-breadcrumb-item>
		</el-breadcrumb>
		<el-card>
			<!-- 警告 -->
			<el-alert title="添加商品" type="info" center show-icon :closable="false">
			</el-alert>
			<el-steps align-center :space="200" :active="activeId-0" finish-status="success">
				<el-step title="基本信息"></el-step>
				<el-step title="商品参数"></el-step>
				<el-step title="商品属性"></el-step>
				<el-step title="商品照片"></el-step>
				<el-step title="商品内容"></el-step>
				<el-step title="完成"></el-step>
			</el-steps>
			<!-- tab栏s-->
			<el-form :model="goodForm" :rules="goodFormRules" ref="goodFormRef" label-width="120px" label-position="top">
				<el-tabs :tab-position="'left'" v-model="activeId" :before-leave="beofreleave" @tab-click="tabClicked">
					<el-tab-pane label="基本信息" name="0">
						<el-form-item label="商品名称" prop="goods_name">
							<el-input v-model="goodForm.goods_name"></el-input>
						</el-form-item>
						<el-form-item label="商品价格" prop="goods_price">
							<el-input v-model="goodForm.goods_price"></el-input>
						</el-form-item>
						<el-form-item label="商品数量" prop="goods_number">
							<el-input v-model="goodForm.goods_number"></el-input>
						</el-form-item>
						<el-form-item label="商品重量" prop="goods_weight">
							<el-input v-model="goodForm.goods_weight"></el-input>
						</el-form-item>
						<el-form-item label="商品分类" prop="goods_cat">
							<el-cascader v-model="goodForm.goods_cat" :options="catelist" :props="cateProps" @change="handleChanged"
							 clearable></el-cascader>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品参数" name="1">
						<!-- 渲染表单动态参数-->
						<el-form-item :label="item.attr_name" v-for="item in manyList" :key="item.attr_id">
							<!-- 复选框组 -->
							<el-checkbox-group v-model="item.attr_vals">
								<el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>
							</el-checkbox-group>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品属性" name="2">
						<!-- 渲染表单静态属性-->
						<el-form-item :label="item.attr_name" v-for="item in onlyList" :key="item.attr_id">
							<el-input v-model="item.attr_vals"></el-input>
						</el-form-item>
					</el-tab-pane>
					<el-tab-pane label="商品照片" name="3">
						<!-- 图片上传 -->
						<!-- action:便是图片要上传的后台接口地址 -->
						<el-upload :action="uploadUrl" :on-preview="handlePreview" :on-remove="handleRemove" list-type="picture" :headers="headerObj"
						 :on-success="handleSucces">
							<el-button size="small" type="primary">点击上传</el-button>
						</el-upload>
						<el-dialog title="图片预览" :visible.sync="previewVisible" width="50%">
							<img :src="previewPath" class="pre-img" />
						</el-dialog>
					</el-tab-pane>
					<el-tab-pane label="商品内容" name="4">
						<!-- 富文本编辑器 -->
						<quill-editor v-model="goodForm.goods_introduce"></quill-editor>
						<!-- 添加商品的按钮 -->
						<el-button type="primary" class="btnAdd" @click="addBTNGOODS">添加</el-button>
					</el-tab-pane>
				</el-tabs>
			</el-form>
		</el-card>
	</div>
</template>

<script>
	import _ from 'lodash'
	export default {
		data() {
			return {
				activeId: '0',
				goodForm: {
					goods_name: '',
					goods_price: 0,
					goods_number: 0,
					goods_weight: 0,
					goods_cat: [],
					//默认的图片的数组
					pics: [],
					goods_introduce: '',
					attrs: []
				},
				goodFormRules: {
					goods_name: [{
						required: true,
						message: '请输入正确的商品名称',
						trigger: 'blur'
					}],
					goods_price: [{
						required: true,
						message: '请输入正确的商品价格',
						trigger: 'blur'
					}],
					goods_number: [{
						required: true,
						message: '请输入正确的商品数量',
						trigger: 'blur'
					}],
					goods_weight: [{
						required: true,
						message: '请输入正确的商品重量',
						trigger: 'blur'
					}],
					goods_cat: [{
						required: true,
						message: '请选择商品分类',
						trigger: 'blur'
					}]
				},
				//商品分类列表
				catelist: [],
				cateProps: {
					label: 'cat_name',
					value: 'cat_id',
					children: 'children'
				},
				//动态参数数组
				manyList: [],
				onlyList: [],
				uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
				//图片上传组件的headers请求头对象
				headerObj: {
					Authorization: window.sessionStorage.getItem('token')
				},
				previewPath: '',
				previewVisible: false
			}
		},
		created() {
			this.getCateList()
		},
		methods: {
			async getCateList() {
				const {
					data: res
				} = await this.$http.get('categories')
				if (res.meta.status !== 200) {
					return this.$message.error('获取商品分类失败')
				}
				this.catelist = res.data
				console.log(this.catelist)
			},
			//级联选择器变化触发函数
			handleChanged() {
				console.log(this.goodForm.goods_cat)
				if (this.goodForm.goods_cat.length !== 3) {
					this.goodForm.goods_cat = []
				}
			},
			beofreleave(activeForm, oldActiveForm) {
				/* 	console.log('即将离开的标签页是'+oldActiveForm)
					console.log('即将进入的标签页是'+activeForm) */
				if (oldActiveForm === '0' &&
					this.goodForm.goods_cat.length !== 3) {
					this.$message.error('请先选择商品分类！')
					return false
				}
			},
			async tabClicked() {
				/* console.log(this.activeId) */
				//如果为1证明访问的是动态参数面板
				if (this.activeId === '1') {
					const {
						data: res
					} = await this.$http.get(`categories/${this.cateId}/attributes`, {
						params: {
							sel: 'many'
						}
					})
					if (res.meta.status !== 200) {
						return this.$message.error('获取动态参数列表失败')
					}
					console.log(res.data)
					res.data.forEach(item => {
						item.attr_vals =
							item.attr_vals.length === 0 ? [] : item.attr_vals.split(',')
					})
					this.manyList = res.data
				} else if (this.activeId === '2') {
					const {
						data: res
					} = await this.$http.get(`categories/${this.cateId}/attributes`, {
						params: {
							sel: 'only'
						}
					})
					if (res.meta.status !== 200) {
						return this.$message.error('获取静态属性列表失败')
					}
					console.log(res.data)
					res.data.forEach(item => {
						item.attr_vals =
							item.attr_vals.length === 0 ? [] : item.attr_vals.split(',')
					})
					this.onlyList = res.data
				}
			},
			//处理图片预览效果
			handlePreview(file) {
				console.log(file)
				this.previewPath = file.response.data.url
				this.previewVisible = true
			},
			//处理已出图片的操作
			async handleRemove(file) {
				//获取删除图片的临时路径
				const filePath = file.response.data.tmp_path
				//根据临时路径，查找对应的索引值
				const i = await this.goodForm.pics.findIndex(x => x.pic === filePath)
				//调用数组splice，把图片从数组中移除
				this.goodForm.pics.splice(i, 1)
				console.log(this.goodForm)
			},
			//监听图片上传成功的事件
			handleSucces(response) {
				console.log(response)
				//拼接得到的图片信息对象
				const picInfo = {
					pic: response.data.tmp_path
				}
				//将图片信息对象，push到pics中
				this.goodForm.pics.push(picInfo)
				console.log(this.goodForm)
			},
			//添加
			addBTNGOODS() {
				this.$refs.goodFormRef.validate(async vail => {
					if (!vail) {
						return this.$message.error('请填写必要的表单项')
					}
					//知行添加的业务逻辑
					//loadsh cloneDeep(obj)
					const form = _.cloneDeep(this.goodForm)
					form.goods_cat = form.goods_cat.join(',')
					//处理动态参数
					this.manyList.forEach(item => {
						const newInfo = {
							attr_id: item.attr_id,
							attr_value: item.attr_vals.join(',')
						}
						this.goodForm.attrs.push(newInfo)
					})
					//处理静态属性
					this.onlyList.forEach(item => {
						const newInfo = {
							attr_id: item.attr_id,
							attr_value: item.attr_vals
						}
						this.goodForm.attrs.push(newInfo)
					})
					form.attrs = this.goodForm.attrs
					console.log(form)
					const {
						data: res
					} = await this.$http.post('goods', form)
					if (res.meta.status != 201) {
						return this.$message.error(res.meta.msg)
					}
					this.$message.success(res.meta.msg)
					this.$router.push('/goods')
				})
			}
		},
		computed: {
			cateId() {
				if (this.goodForm.goods_cat.length === 3) {
					return this.goodForm.goods_cat[2]
				}
				return null
			}
		}
	}
</script>

<style lang="less" scoped>
	.el-checkbox {
		margin: 0 10px 0 0 !important;

	}

	.pre-img {
		width: 100%;
		height: 100%;
	}

	.btnAdd {
		margin: 15px;
	}
</style>
